A Canadian teacher was in custody Friday after surrendering to authorities after Indonesia's Supreme Court overruled his acquittal and that of an Indonesian teacher on charges they sexually abused three children at a prestigious international school, and ordered longer prison terms for both.

Canada and the United States both expressed shock at the court decision.

Neil Bantleman and Ferdinant Tjiong had been sentenced to 10 years in prison last April by the South Jakarta District Court. They appealed to the High Court, which acquitted them in August, ruling there was insufficient evidence to convict them.

Supreme Court spokesman Suhadi said a three-member panel of judges handed down a verdict Wednesday based on the prosecutors' appeal.

"The judge panel concluded that the defendants were proven to have violated the 2007 Child Protection Law," said Suhardi, who uses a single name. "It did not only reinstate the District Court's verdict but also lengthened the sentence to 11 years."

The two teachers at the Jakarta International School, now called the Jakarta Intercultural School, also were ordered to pay a fine of $7,440 each or serve six more months in jail, Suhadi said.

Chandra Saptaji, head of the general crime section at the South Jakarta Prosecutors' Office, said Bantleman, who was in Bali, surrendered after communicating with authorities through the Canadian Embassy.

"I can say that he was cooperative," Saptaji told The Associated Press. "He took the initiative by flying back to Jakarta escorted by officials from the embassy and the prosecutors' office.

Saptaji said Bantleman was admitted Friday morning to Cipinang Prison, the same prison in eastern Jakarta where Tjiong was taken on Thursday.

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